baber/WOPTO huggingface dataset:
Patent GB-150714-A (GB)
Title: Improvements in safety devices for railway points or switches
IPC: B61L5/00
Filed: 1920-05-15
Abstract: 150,714. Burke, W. J. Sept. 9, 1919, [Convention date]. Safety bars.-Railway points are fully opened or closed by a wheeloperated bar 16 carrying an adjustable wedge 45 which is forced into engagement with a wedge 50 adjustably carried by a slide bar 32 secured to one tongue. The bar 16 is pivoted nearer one end thereof and outside one rail, preferably the inner rail, on a threaded pin 23 carried by a bracket 26 secured upon a plate 19. The bar slides in a groove in a block 27 secured to the rail, and has its upper edge bevelled at 17 for worn wheel tyres. The bar has a lug 42 at its forward end which carries the shank 43 of the wedge 45, a washer 46 and adjusting-shims 47 being provided. The wedge 50 is secured in a slot in the bar 32 which is mounted to slide between upper and lower plates 38, 37 and has a threaded end secured by nuts 35 to a plate 34 bolted to one tongue.
Patent GB-837698-A (GB)
Title: Improvements in or relating to disc brakes
IPC: F16D65/22
Filed: 1956-05-01
Abstract: 837,698. Disc brakes. REGIE NATIONALE DES USINES RENAULT. May 1, 1956 (June 7, 1955; Feb. 15, 1956], No. 13455/56. Class 103 (1). In a " spot-type " disc brake an axially slidable brake disc 5 rotatable with a vehicle wheel is braked by friction pads 6a, 6b housed in a rigid caliper housing covering a minor portion only of the periphery of the disc and brake application may be effected by hydraulic application behind a piston 10 housed in a cylinder 9 which forces friction pad 6b into frictional engagement with brake disc 5 to move the latter into frictional engagement with friction pad 6a or, alternatively, brake application may be effected by mechanical means 35, 34 to force friction pad into frictional engagement with disc 5 to move the disc 5 into frictional engagement with friction pad 6b. An automatic wear adjustment device is provided in hydraulic cylinder and comprises an external sleeve 19 rigidly connected to the piston 10, an internal cylindrical element 20 free to move to an extent equal to the normal play provided between the friction pads and the disc, a set of balls 39 situated between the sleeve 19 and the cylindrical element 20 and urged by springs 27 against a conical ramp 21 on the cylindrical element, the arrangement being such that if, during application of the brake by the hydraulic piston 10, the piston 10 and the sleeve 19 move to an extent greater than the normal play provided for, the sleeve 19 is displaced relative to the cylindrical element, such that the sleeve and the cylindrical element 20 then remaining in their new relative position due to the wedging action of the balls.  Another type of disc brake construction is illustrated in Figs. 7 and 8, wherein two concentric annular discs 41, 42, rotatable with a vehicle wheel, are retarded by friction pads 48, 49 which are adapted to be pressed against the discs by an hydraulic cylinder 50 situated on one side of the discs. The pads are spaced apart by springs 57 and an automatic adjustment device 53 is incorporated in the hydraulic cylinder 50. The embodiment illustrated in Figs. 7, 8 and 9 includes mechanical brakeapplying means in the form of a multiple threaded screw 55 provided for mechanical actuation on the same side of the concentric annular discs 41, 42 as, and in addition to, the hydraulic actuating cylinder 50. Rubber protectors 61 are provided for shielding the driving surfaces of the discs.
Patent GB-409139-A (GB)
Title: Improvements in furnaces for the heat treatment of cement and other materials
IPC: C04B11/028
Filed: 1933-05-09
Abstract: 409,139. Cement & c . furnaces. KYRIACOU, N., 8, Rue Voltaire, St. Germainen-Laye, France. May 9, 1933, No. 13501. [Class 51 (ii).] In a furnace, intended particularly for burning cement, but applicable also for drying, roasting, calcining, and other heattreatment processes, of the kind comprising a fixed chamber through which the charge material is conveyed by a reciprocating hearth, the latter is constituted, for the whole or part of its length, by a grate through which and the layer of material thereon the heating gases are drawn in a downward direction. In the form shown in Fig. 1, the discharge end 1 of the shaking hearth, adjacent the burner 8, is solid, being formed for example of concrete, and delivers the treated material to a cooler 3 also fitted with a shaking conveyer 7. The grate portion 2 of the hearth is formed by steel troughs, Fig. 2, assembled to provide longitudinal apertures for the downward passage of the hot gases. A similar perforate shaking hearth, either integral with or separate from the main hearth 2, or a rotary trommel may be provided at the charging end of the furnace to serve for preliminary heating or drying, this grate or trommel being loaded with heataccumulating bodies such as balls of metal or refractory material. Fig. 4 shows a modification in which the furnace is formed with a fixed portion 5 enclosing the shaking hearth 2 and a rotary portion 4 in which the final stage of the heating process is effected. The parts 4, 5 are connected by a sealing ring to prevent entry of air.
Patent GB-208176-A (GB)
Title: Improvements relating to regenerative furnaces
IPC: F27D17/00
Filed: 1922-05-13
Abstract: 208,176. Ridge, H. M. May 13, 1922. Regenerators.-In a reversible regenerator furnace, the waste gases after passing through the usual or primary regenerative air and gas chambers are passed through anauxiliary air regenerator, where air is preliminarily heated before entering the primary air regenerator, and with a view of utilizing still further the heat of the waste gases they may finally be passed through a recuperator of the counter-current type, where the air is heated before entering the auxiliary regenerator. In the arrangement shown in Fig. 1, waste gases may be led from the regenerators c, d to the auxiliary regenerator m and thence to the stack w. At the opposite end of the furnace air is admitted to the auxiliary regenerator m<1>, which is closed to the stack, and passes through the primary regenerator c' to the furnace, while gas entering through the valve h<1> passes to the furnace through the regenerator d'. The auxiliary regenerators m are preferably arranged at a lower level than the primary regenerators. When a recuperator of the countercurrent type is used in addition, the same passages are used alternately for waste gases and air. Reference has been directed by the Comptroller to Specifications 16411/84, 26937/96, 16690/07, 16041/11, 114,222, 127,165, and 174,240.
Patent GB-798504-A (GB)
Title: Improvements in electroluminescent devices
Inventor: MASH DEREK HUBERT
IPC: H05B33/26
Filed: 1954-05-10
Abstract: 798,504. Electroluminescence. THORN ELECTRICAL INDUSTRIES, Ltd. May 4, 1955 [May 10, 1954], No. 13633/54. Class 39(1). In a light source of the type comprising two parallel plane electrodes, one of which is transparent, separated by electro-luminescent dielectric material, the remaining electrode is composed of a material, such as lead dioxide and/or manganese dioxide, which is conducting but which is converted locally to a non-conducter upon the break-down of the dielectric material and the resultant heating due to the passage of a spark, whereby the portion of the dielectric which has broken down is isolated. The light source illustrated comprises an electro-luminescent dielectric layer 22 and two electrodes 19, 24, the electrode 19 comprising a transparent metallic coating upon a glass plate 18 the coating being applied by exposing the glass plate while hot to stanic chloride vapour. The electrode 24 which is separated from the electroluminescent layer by a light-reflecting layer 23 as described in Specification 798,503 preferably consists mainly of lead dioxide which is converted upon being locally heated when a break-down of the dielectric material occurs to a non-conducting oxide of lead, thus isolating the broken-down portion of the dielectric. The electrode 24 which forms a coating upon the light reflecting layer 23 is applied as a suspension of lead dioxide in ammonia solution to which may be added a cellulosic binding material to give added strength to the layer and also graphite or metal to increase its conductivity. A further layer of graphite 25 is applied over the electrode layer 24. Terminals 20, 21 are connected respectively to the layers 19 and 25. The back and the edges of the lamps are coated with a layer 26 of a moisture proof insulating material.
Patent GB-1187471-A (GB)
Title: Hydrazones of 1-Amino-4-Dibenzocycloheptenyl- and 0-Amino-4-Dibenzocyclooctenyl-Piperazines
IPC: C07D401/12
Filed: 1967-03-23
Abstract: 1,187,471. Dibenzo-[a,d]-cycloalkane derivatives. G. D. SEARLE & CO. 23 March, 1967 [25 March, 1966], No. 13640/67. Addition to 1,040,038. Heading C2C. The invention comprises compounds of the Formula I, wherein Y represents a C 2-3  alkylene radical; X represents a hydrogen atom or a hydroxyl or ethyl radical; and each of m and n represents 0 or 1, provided that, when the pyridyl radical is unsubstituted, either m or n must represent 1 and non-toxic acid addition salts thereof and their preparation by condensing a pyridinecarboxaldehyde of the Formula V with a hydrazine of the Formula II. Hydrazines of the Formula II may be prepared from halodibenzocycloalkanes of the Formula IV, which may be prepared by halogenation of the corresponding hydroxy compounds, by reaction with suitable 1-nitrosopiperazines in an inert solvent and reducing the resulting nitroso derivatives of the Formula III. The compounds of the invention have anticonvulsive properties.
Patent GB-212790-A (GB)
Title: Improvements in devices for effecting the registration of plates for multi-colour printing
IPC: G03F9/00
Filed: 1923-05-24
Abstract: 212,790. Bassett, E. May 24, 1923. Printing-surfaces.-Apparatus for registering printing-plates on their mounting-boards for multi-colour printing comprises an iron slab a to support the mounting-board m, a wooden slab c to support a lay-out sheet, the slabs being secured together side by side, a hinged frame e adapted to be superposed on either slab, and pins l, pointed at both ends, carried adjustably by the frame e so that, after they have been adjusted to certain points on the lay-out sheet and fixed in position, they can, by a reversal of the frame. be applied to the board m to indicate the position of the corresponding points on the printing- plates. The pins l preferably have a steel point at the end engaging the slab c and a non-scratching point of bone, ivory, ebony &c. at the end engaging the printing-plates and are carried by forked or slotted arms k adjustably secured by studs and nuts i to cross bars g the ends of which are adjustable along internal ribs f on the frame e. A frame b is fixed on the slab a to form a chase for the mounting-board which is clamped by furniture n. The frame e is hinged by means of pointed pivots p, carried thereby, engaging screws carried by the frame d enclosing the slabs a, c, and may be counterweighted.
Patent GB-399504-A (GB)
Title: Improvements in or relating to heat insulation
IPC: C03B19/08
Filed: 1932-02-29
Abstract: 399,504. Nonconducting coverings for heat. MUNTERS, C. G., 75, Linnegatan, Stockholm. Feb. 29, 1932, No. 13853/33. Convention date, March 3, 1931. Divided on 402,726. [Class 64 (ii).] Heat insulation comprises an hermetically sealed element which contains a gas having a lower heat conductivity than air at corresponding pressure and means for counteracting heat transfer due to connection and radiation, the outer (cold and hot) surfaces f of the element being of metal and the transverse walls h connecting them being of a poor heat t conducting material such as ebonite or celluloid. The gas or gas mixture comprises compounds of halogen or sulphur such as sulphur hexafluoride, sulphur dioxide, or carbon disulphide, and is at atmospheric or reduced pressure. Convection losses are reduced by packing cellular or pulverulent material g such as glass wool, silicious earth, or powdered hard rubber between the plates f or by providing foils or sheets l preferably of aluminium with holes r, the gas being added at n. The transverse walls h may be corrugated and coated with varnish shellac or asphalt. Specifications 399,502 and 399,503 are referred to.
Patent GB-884489-A (GB)
Title: Improvements in or relating to travelling wave tubes
Inventor: TREMLETT CHARLES ALBERT
IPC: H01J25/38
Filed: 1959-04-23
Abstract: 884,489. Travelling wave tubes. M.O. VALVE CO. Ltd. April 25, 1960 [April 23, 1959], No. 13870/59. Class 39(1) [Also in Group XXIII] For a travelling wave tube in which a wire helix is to be supported accurately in the tube by internal ribs, the tube is formed by collapsing a straight tube on to a mandrel, the mandrel comprising a core substantially enclosed in a sheath formed of wires, there being gaps in the sheath at positions corresponding to the required ribs, the core and then the wires being subsequently removed. The mandrel core 9 includes a stainless steel rod 11 of circular cross-section having at one end a silver steel bolt 12 screwed therein and a loose sleeve 13 tightened against the rod 11 thereby and at the other end a silver steel bolt 15 lying in an untapped hole 14, a sleeve 16 being screwed on to bolt 15 and having lugs 17 located in slots 18 in the rod 11 to prevent rotation with respect thereto. A sheath 10 is formed from a large number of spiralled nickel wires 19, each wire being twisted round the rod 11 about two and a half times, and welded to the sleeves 13 and 16. The wires 19 are then tightened on the rod 11 by screwing of the bolt 15. Three wires 19 are then removed from the sheath 10 to form the required gaps, as seen in Fig. 4. The glass tube 21 is sealed at one end to a bulb 22 and the mandrel placed therein so that the sleeve 16 lies within the bulb 22, the other end of the tube 21 being connected to a vacuum pump. The tube 21 is heated in an enclosure 24 to soften the tube which collapses on to the mandrel, forming internal ribs in the gaps of the sheath 10. After cooling, the ends of the tube 21 are cut away and the wires 19 cut adjacent the welds to the sleeves 13, 16, which are then removed. The rod 11 is slid out, facilitated by blowing oil through tube 21, and the wires 19 removed, the majority collapsing but any trapped by the ribs being dissolved out.
Patent GB-163714-A (GB)
Title: Improvements in air propellers
IPC: B64C11/20
Filed: 1921-05-18
Abstract: 163,714. Reed, S. A. May 26, 1920, [Convention date]. Screw propellers.-The blades of solid metal aeronautical propellers are made thin but rigid at the root and progressively less rigid toward the tips so that the necessary rigidity toward the tip is dependent mainly on centrifugal force due to the mass of the blade. The blades may be tapering in thickness and of such width at the root as to withstand torque. They may also be formed in one with a central boss portion. The thin blades 1, 2 are given the necessary pitch by bending at the hub, and are secured to the two-piece hub 7, 8, bent to a reverse pitch. Fig. 1, by bolts, the faces of the two parts being correspondingly shaped. The blades taper in thickness, are sharp at the edges, the leading edge of one blade continues to become the following edge of the other blade, and the central portion is a wide portion capable of taking the torque. A four-bladed propeller in one piece may be similarly constructed or the blades separately attached to the hub. In modifications, the blades may be arranged in sets or complete propellers in sets tandem fashion on the shaft.
Patent GB-276737-A (GB)
Title: Improvements in or relating to machinery or apparatus for grinding, machining or otherwise treating conical surfaces such as the rollers and bearing surfaces of conical roller bearings, epicyclic gearing of the friction roller type, and other analogous mechanisms
IPC: B24B5/14
Filed: 1926-06-02
Abstract: 276,737. Cowburn, F. C., and Godfrey, E. L. June 2, 1926. Turning.-A device for grinding, machining, or otherwise treating conical surfaces such as the rollers and bearing surfaces of conical roller bearings, or epicyclic gearing of the friction roller type, comprises a pair of pivoted setting-arms c which coact with a conical member d and distance-gauges, so that the surfaces of all the bearing elements may be made to converge to a common apex by linear gauge adjustments without direct computation of the conicities of the bearing elements. The work l, which in Fig. 1 constitutes the inner bearing member, is carried in a chuck b and is ground by a grinding-wheel k mounted on a compound slide h. i, which is guided on one of the arms c. The angularity of the arms may be symmetrically varied by means of a hand-wheel e<1> which traverses the cam member d engaging roller abutments on the arms. The arms c may be calibrated as at p, q, and different linear gauges may be inserted between these points, first for treating a conical roller, then for treating the inner bearing element and finally for treating the outer bearing element. For the latter operation the grinding-wheel is arranged as indicated in Fig. 2. The work is correctly located in relation to the point C<1> by means of a setting-surface on the machine. The machine may also be provided with a tool adapted to finish the surface o, carrying conical rollers m, and a cutting tool may be substituted for a grinding-wheel. The members c may be capable of parallel adjustment for finishing cylindrical surfaces.
Patent GB-1055718-A (GB)
Title: New phthalazinium compounds and process for preparing same
IPC: A61K31/00
Filed: 1964-04-06
Abstract: New compounds comprise quaternary compounds (I), their pseudo bases (II) and ethers of the latter, including anhydro-compounds (corresponding to two molecules thereof eliminating water), <FORM:1055718/C2/1> <FORM:1055718/C2/2> in which Ph is an ortho-phenylene group which may be substituted by one or more lower (i.e. 1-6 C) alkyls, lower alkoxys and halogens, R0 is polyhalogeno-phenyl, R1 and R2 are hydrogen or lower alkyl, and A- is an anion; and are prepared by reacting a phthalazine with a compound R0-CH2-X, where X is a reactive esterified hydroxyl group, the compounds being interconvertible by treatment with acids or bases, heating to anhydro-form, etherification with hydroxy compounds, hydrolysis.  Pharmaceutical compositions comprise the new compounds with carriers, likewise veterinary and feedstuff preparations.  Oral and parenteral compositions of the antiparasitic compounds are described.
Patent GB-1208382-A (GB)
Title: Improvements relating to semiconductor strain transducers
Inventor: THORP WILLIAM
IPC: G01L9/00
Filed: 1968-03-23
Abstract: 1,208,382. Circuit assemblies; semi-conductor devices. FERRANTI Ltd. 20 March, 1969 [23 March, 1968], No. 14139/68. Headings H1K and H1R. [Also in Division G1] A pressure transducer comprises a plurality of piezo-resistive strain gauge elements 12 defined by PN junctions on a semi-conductor wafer 11, a metal ring 21 alloyed to the circumference of the wafer 11, a ring of insulating material 22 metallized on one surface being bonded to the metal ring 21, and a housing 26 enclosing the face of the wafer carrying the strain gauge elements. Semi-conductor details.-The wafer 11 may be a single crystal of N-type silicon doped with antimony having a lapped polished major face in the (111) and (110) crystal directions on which is epitaxially deposited a layer of P-type silicon doped with boron. The strain gauge elements 12 are defined by selectively removing the surrounding parts of a continuous layer of silicon oxide formed over the epitaxial layer and diffusing phosphorus to convert the unmasked portions to N-type. The remaining silicon oxide is then removed, leaving the P-type elements 12, arranged along the (111) direction, electrically, but not mechanically, isolated by the PN junctions defining them in the wafer. The opposite face 19 of the wafer 11 is covered with a layer 20 of silicon dioxide and a layer 38 of titanium, for screening. Arrangement of strain gauge element.-Four elements 12 are placed centrally and experience tension when the wafer is under pressure, and four (each consisting of two parallel arms connected by an aluminium strip 17) are placed near the edge and experience compression. Aluminium strips (formed by selective removal) connect the elements 12 to contacts 16 arranged on the circle of minimum stress 13. Gold wires 18 connect the contacts 16 to metallized areas (25) on the insulating ring 22. Springs 34 (or solder blobs 44, Fig. 4, not shown) connect the areas 25 to leads 35. Bridge circuit.-Two each of the central and edge strain gauge elements are connected to form a bridge circuit. Other elements 12 may be used as balancing or calibration resistors. Two temperature sensing elements 39 and a thin film trimming resistor (not shown) on the insulating ring are also included in the bridge circuit. Assemblies.-One or more transducers may be mounted on a plug or socket (50, Fig. 4, not shown) for connection to an amplifying and linearizing module (52), itself connectable to other sub-units.
Patent GB-592905-A (GB)
Title: Price-changing device for prepayment meters
IPC: G07F15/08
Filed: 1945-06-05
Abstract: 592,905. Prepayment mechanism for meters. ENGLISH ELECTRIC CO., Ltd., and WHITEHEAD, R. K. June 5, 1945, No. 14143. [Class 27] Mechanism having a spring to assist the return of the quantity differential by the meter, and a price-change gear between the quantity differential and meter, has means, such as a supplementary spring, which is adjusted with the pricechange gear so as to maintain the load on the meter substantially constant. As shown, the switch-tripping shaft 2a of the quantity differential 2 is geared to a shaft 6a loaded by a spring 10 for assisting the meter drive, which is through a price-change gear (not shown) to a sun-wheel 1. A pinion 7 on the shaft 6a meshes with a toothed quadrant 8 loaded by a supplementary spring 12, the tension in which is adjustable, its anchorage being an arm of a bell-crank 18 which is rocked through a screw and nut 16a, 17a and gearing 14, 15 when an adjusting shaft 13 is turned. The shaft 13 also adjusts the pricechange gear, and the arrangement is such that the change in tension of spring 12, as the shaft is turned to adjust the price, compensates for the change in gear ratio between the differential and meter so that the load on the meter is not materially affected.
Patent GB-669308-A (GB)
Title: Improvements in or relating to damping devices for governors of hydraulic apparatus or systems
IPC: G05D13/06
Filed: 1948-05-25
Abstract: 669,308. Fluid-actuated valves with dashpots. MARINE, O. May 25, 1948 [June 28, 1947], No. 14149/48. Class 135 [Also in Groups XXVIII and XXXII] A valve comprises a closure member 20 positioned relatively to its seat 19 by a piston 18 subjected to the pressures on opposite sides of a restriction 17 to maintain a constant rate of liquid flow at 16 beyond the restriction. The piston is loaded by a spring 2 and hunting is prevented by a dashpot device comprising a piston valve 4 and a piston 3, the spring acting between the piston and the head 1 of the valve and being initially compressed. The piston is slidable on the valve and in a cylinder 7 which has a connection 5 with the inlet line 15 of the flow controlling valve, and an exhaust connection 6. A liquid filled chamber 8 in the cylinder is connected to the interior of the piston 3 by a passage having a throttle 9. Upward movement of the piston 18 compresses the spring 2 and moves the valve 4 to connect the chamber 8 to exhaust, whereby the piston 3 follows the valve at a speed determined by the throttle 9 to close the valve and return the spring to its initial compression. Downward movement of the piston 18 causes extension of the spring and movement of the valve 4 to connect the chamber 8 to the inlet whereby the piston 3 slowly follows the valve to recompress the spring and cut-off the inlet.